keepalive swap interval and probes

The interval and probes members for setting keepalive options
per-connection on Linux were swapped.

Signed-off-by: Larry Hayes <lhayesg@gmail.com>
Bugfix compiling for cross compiling.

! does not mean NOT, use NOT instead :)
Fix LWS_NO_SERVER build.

"int n" was used also when server parts are not compiled, so don't put it inside the LWS_NO_SERVER ifdef.
getifaddrs missing more user friendly in CMake.

Don't require the user to enable using the built-in BSD getifaddrs implementation on systems such as uclibc that lacks it manually.

Instead if getifaddrs doesn't exist, use the BSD one automatically, except if the user explicitly tells the user not to do this using WITHOUT_BUILTIN_GETIFADDRS (which will result in a compilation error, but at least with a nice error message explaining why).
Fixed CMake compile options.

Fixed so that the build options for the CMake project works:

- The test apps used the LWS_NO_EXTENSIONS define, so they needed lws_config.h included when building using CMake.
- Rename some options so that individual test apps can be turned off.
- Separate building the test-client/test-server and compiling the server/client parts into the lib.
- Don't include server or client specific sources into the build if they shouldn't be built.
- Added an error if both client and server parts are excluded at the same time (makes no sense).
- Removed duplicate install targets for the test apps.
- Commented out the WITH_LIBCRYPTO option since it isn't used at the moment.
BUGFIX: Fixed bug for installing test-apps for CMake.

Appending to the TEST_APP_LIST variable function did not work from within the create_test_app function (It would create a function scope variable with the same name and discard it). We instead need to use a macro for this.

The previous commit also removed the duplicate install for the test-apps (because we want all the install steps in one place in the file for clarity). That change made it obvious that the TEST_APP_LIST never gets populated.
Added CPack support + some more.

- "make dist" will now produce a tar.gz file. This includes everything (not really what we want but a start).
- Got rid of a bunch of defines and variables that aren't used.
- Added the option LINK_TESTAPPS_DYNAMIC that enables linking to the shared library version of the lib for the test apps, instead of doing it statically like the default is.
- Fixed proper support for the --prefix stuff (-DCMAKE_INSTALL_PREFIX for cmake). (Don't specify /usr/local explicitly, that is the default anyway and will break other platforms).

- Note: I noticed a problem with the "INSTALL_DATADIR" define used by the test-apps. Since we hard code the path to the certs using this, doing "DESTDIR=/bla make install" will result in not being able to use the SSL mode for the test-apps since they won't find the certs. (This also applies to the autoconf project). Fixed this by setting "../share" as the default location instead of using the prefix.
Fixed ssl cert generation on Windows.
Set the _DEBUG macro for CMake also.
Print SSL error codes as well as the string.

CYASSL doesn't compile with the error strings in some configurations, so
it is nice to have the error code on SSL errors as well.
Fix running test programs from within visual studio.

Copy test-server data to a path so that we can run the test-server from
within visual studio without having to copy stuff around.
remove MAX_HEADER_NAME_LENGTH from header

Still lurking aound as a ghost after all real usess of it
were removed with the minilex changes.

Signed-off-by: Andy Green <andy.green@linaro.org>
move ssl cipher list from compiletime to context creation time option

More flexible this way... NULL for the new member means use
the ssl library default set of ciphers, so as long as your info
struct is zerod by bss or memset, you don't need to do anything
about this change unless you want to set the cipher list.

Signed-off-by: Andy Green <andy.green@linaro.org>